>I hope what I've explained above makes sense. To reiterate, if you
>want me to do something with respect to hotkey, I still don't
>understand how and where hotkey is involved. Perhaps you could help me
>by elaborating further.
I know this user-defined region needs address space handler, but your
address space handler below is so weird that make me doubt
the correctness. The example of address space handler is:
ec.c : acpi_ec_space_handler
I suggest LCD support in hotkey.c like:
http://bugzilla.kernel.org/attachment.cgi?id=6843&action=view
Implement device ASIM in a separate driver to support user-defined
address space handler.
Config userspace acpi daemon to respond events by evoking
LCD._BCM with command:
echo -n xx > /sys/hotkey/brightness.
If you do these, then the only specific thing would be ASIM.
Thanks,
Luming
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